The MOA Trial

The effectiveness and cost-effectiveness of physiotherapy interventions in patients with osteoarthritis (OA) of the hip or knee

Principal Investigator


Post-graduate students

  • Cathy Chapple
  • Jill Nalder
  • Dr Daniel Pinto
  • Dr Alexis Wright

Study Details

Patients with osteoarthritis (OA) of the hip or knee make up a large proportion of New Zealand’s elective surgery waiting lists. Research suggests that physiotherapy interventions reduce pain and disability in patients with OA, and may delay or prevent need for surgery.

This study was a randomized, controlled trial (RCT) designed to investigate the benefits and costs of physiotherapy for improving pain and physical function in people with OA of the hip or knee. Patients were randomly allocated to one of four groups: exercise physiotherapy; manual physiotherapy; exercise plus manual physiotherapy; usual medical care only.


This research was funded by the Health Research Council of New Zealand, and the Lottery Health grants board.



[link to a dedicated MOA repository]